@misc{indiciae29924f693f2c,
  title = {Niobium-bearing minerals from the Sheep Creek carbonatite-related deposits of southwest Montana, USA},
  author = {Christopher H. Gammons and Heather A. Lowers and Jay M. Thompson and Gary F. Wyss},
  year = {2026},
  doi = {10.3390/min16100987},
  url = {https://pubs.usgs.gov/publication/70282877},
  note = {Source identifier: 70282877}
}